MOTOR DRIVING CIRCUIT FOR WATER-ENTERING PROOF OF A VACUUM CLEANER

摘要

The circuit is for detecting water inhaled through a inhaling tube of a cleaner not using a microprocessor so that a motor is operated without damage caused by the water. The circuit includes a variable resistor(VR) for adjusting speed of a motor, water detection switch(12) for detecting water through inhaling tube, and a motor drive circuit comprising a resistor, capacitor and a triac for driving a motor according to output state of the water switch.